Packless ball valve



@cto 9 1927s Z/lfl' new:

' 1,5790 H. BROWN' PACKLESS BALL VALVE Filed Aug. 19 1926 inventanHarold Erwan,

Patented Qct. 1S, 1927.

UNITED sraras earnair oriana.

HAROLD BROWN, or Kansas oirY, KANSAS.

PAcKLEss BALL VALVE'.

My invention relates to valves, and one object is to provide a valvewhich is so constructed thatthe usual packing used around the valve stemto avoid leakage can be dispensed with.

vA further object is to provi-de a valve which will serve both as amanually controlled feed valve and as a check valve.

` Another object is'to provide a valve of but few parts wliichvcan beeconomically inanfufactured and'asseinbled and are not likely to get outof order.

Other objects will hereinafter appear and in 'order that the inventionmay be fully understood. `reference will now-be had to the accompanyingdrawing, in which:

Fig. 1 is a. vertical longitudinal section of ofthe valve arranged inthe form of a faucet.

Fig. 2 is a 2*2 of Fig. 1. t

Fig. 3 is a fragmentary section on line 3-3 of Fig. 1.

Fig. 4 is a vertical longitudinal section of the valve arranged in theform of a feed and check valve.

`Referring more particularly to the form disclosed by Figs. 1 to 3,inclusive, 1 designates a valve casing having threads 4 at o ne end anda discharge nozzle 6 at its opposite end. The casing 1 is providedintermediate its ends with a seat 8 formed in a bushing 10 arranged in apartition 12 preferably cast integral with'the casing 1. The bushing 10and the partition 12 have registering ports 14 and 16, respectively, forthe passage of a fluid through the valve and said partition 12 has anupwardly projecting tubular eX- tension 18 for a purpose which willhereinafter appear.

20 designates a ball valve-plug arranged to snugly'V fit the seat 8 inthe bushing 10. Said valve-plug 20 is normally held in seated positionby a. tubular element 22 provided at its closed lower end with a socket24 adapted to fit snugly upon the valveplug` 20. vThe lower closed endof the tubular element 22 has a centrally disposed vertical relief port26 and traverse relief ports 28, all of which extend from the eXteriorto the interior p-ortion of said element 22 as shown by Fig. 1. Thetubular element broken cross section on line 22 is provided at its upperportion with eX- Application led August 19, 1926. Serial No. 130,190.

partition 32 secured upon the casing 1 by the internal annular shoulder34 of a cap 36, which is threaded upon the upper portion of the valvecasing 1.

38 designates a valve stem having a lower portion 39, which extends intothe tubular element 22, and a conical upper portion 40 which isjournaleol in the upwardly tapered portion 44 of the cap 36. The lowerportion 39 is rectangular in cross section to fit into the correspondingbore of the tubular element 22, see Fig. 2, so that when the valve stem38 is rotated it will also rotate the tubular element 22 to open andclose the valve.

The upper end of the valve stem 38 projects through the upper end of thecap 36 and is provided with a suitable handle 46 whereby said valve stemmay be rotated.

. A coil spring 48 is interposed between the partition 32 and theconical upper portion 40 of the valve stem 38 and exerts an upwardpressure on said valve stein to hold the conical portion 40 snugly inthe tapered portion 44 of the cap 36.

In order to open the valve for the passage of fluid, such for insta-nceas steam or water. the handle 46 is turned inthe proper direc-l tion toscrew the tubular element 22 upwardly in the partition 32, whereupont-he valve-plug 20 becomes unseated by pressure of the fluid beneathsaid valve-plug. Any air or fluid which may pass between the valve-plug20 and the socket 24 is free to escape through the relief ports 26 and28 and thereby permit the valve-plug 20 to come in direct contact withsaid socket 24 where it is frictionally held against rotation by theupward pressure of the iiuid passing through the ports 14 and 16. Theescape of any fluid from between the valve plug 20 and the socket 24through the ports 26 and 28 is hastened by the suction of the fluiddirected upwardly by the tubular extension 18 which surrounds the valveplug 20 and, the lower end of the tubular element 22. As a ground jointis provided between the upper conical portion 40 of the valve stein 30and the tapered portion 44 of the cap 36 no leakage of fluid through thetop of the valve can occur as in the case of ordinary packing, and wearon said ground joint is automatically taken up by the upward pressure ofthe spring 48. In order to close the valve and cause the valve-plug 20to engage the seat 8, the handle 46 is rotated in a reverse direction tothat at which it was rotated to `open the valve,

The construction and operation of the valve disclosed by Fig. 4 issimilar to that of the valve disclosed by Fig. l, as it evidenced bycorresponding reference numerals With exponents a, the main diiierencebeing that when the modified form of valve is i opened to permit fluidto pass in the direction of arrovv a, anyv reversal of the fluid in thedirection of the arrow 7) will instantly cause the valve-plug 20 toengage the seat 8a and thus prevent the fluid from flowing backwardlythrough the valve.

In addition to the forms disclosed by tlie drawing, I reserve all rightsto such other forms and modifications as properly fall to cause thelatter to control the movementl of the valve plug and the opening andclosing of said port. t

2. A valve consisting of a casing having a,

port, a ball valve-plug for closing said port,

a tubular element for engaging said valve plug and provided with reliefports one of which is adjacent to the valve plug, a tubular extension inthe valve casing surrounding one end of said tubular element, and meansfor actuating said tubular element to cause the latter to control themovement of the valve-plug and the opening and closing of' said port.

3. A valve consisting of a casing having a port, a ball valve-plug forclosing said port, a tubular element having a socket at one end to fitover the valve-plug and provided with relief ports, one of whichcommunicates with said socket, a partition in the'valve casing and inwhich said tubular element is threaded, and a valve stem journaled inthevalve cas-ingv and projecting into the tubular element to rotate thelatter and canse it to control the movement of the valve-plug and theopening and closing of said port.-

4. In a valve of the character described, a casing having a port for thepassage of i'luid, a balll valve ping for closing said port, andadjustable means for controlling said valve plug provided with reliefmeans for the escape of fluid from between the valve plug and saidadjustable means, and a tubular extension in the valve casingsurrounding the valve plug and the adjacent end of said adjustablemeans.

In testimony vvhereoil I ailx my signature.

HAROLD BROWN.`

